Conjurer's Bauble + Mechanized Production + River Song + Time Walk

UR identity

The 4 combo pieces

• Conjurer's Bauble
• Mechanized Production
• River Song
• Time Walk

What must be in place

You have enough mana to cast Time Walk each turn.

How to execute it

1. At the beginning of your upkeep, Mechanized Production triggers, creating a token copy of Conjurer's Bauble.
2. Cast Time Walk by paying its mana cost, causing you to take an extra turn after this one.
3. Activate the Conjurer's Bauble token by tapping and sacrificing it, putting Time Walk onto the bottom of your library from your graveyard, and then causing you to draw Time Walk from the bottom of your library due to River Song.
4. Repeat each turn.

What the combo produces

• Infinite turns
• Lock